A cylindrical tank has a diameter of 12 in. with 20 in. of water. A piece of iron is submerged in the water and the water level is raised 6 in. What
is the volume of the piece of iron?

first, you divide the triangle in two, tô form a retangle triangle. after, using pythagoream theorem:

18^2 = 14^2 + (x/2)^2

(x^2/4) + 196 = 324

x^2/4 = 324 - 196

x^2/4 = 128

x^2 = 512

x = √512

x = √2^9

x = 16√2 cm

i hope i you.

the value of x is 28.2